How should I handle daily puzzle resets across different timezones in PHP?

Дата публикации: 23-09-2026 03:00:50

That clears things up for me. I hadn’t considered the distinction between the puzzle’s business key and an auto-incrementing surrogate key, or the fact that auto-increment values aren’t guaranteed to be consecutive.
I’ll keep the puzzle_date/puzzle_type combination as the business-level uniqueness constraint and use the auto-increment ID where I need a simple FK target.
Thanks for the explanation — I have a much clearer idea of how I want to structure this now.

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